Colored photograph.



PROSPER MARIE CONSTANT GRENIER, OF NEW YORK, N. Y., ASSIGNOR TO I THE GRENIER ART COMPANY OF WEST VIRGINIA.

COLORED PHOTOGRAPH.

SPECIFICATION forming part of Letters Patent No. 661,976, dated November 20, 1900:

Original application filed May 1, 1899. Renewed March 6. 1900. Serial No. 7,595- Divided and this appli ati n fil d une 19, 1900. Serial No. 20,906. (No sp i ns) To all whom it may concern.-

Be it known that I, PROSPER MARIE CON- STANT GRENIER, formerly a resident of Paris, France, now sojourning in the United States,

city of New York, State of New York, have invented certain new and useful Improvements in Colored Photographs, of which the following is a description.

The invention is especially suitable for pho- 1O tographs on silk and on tapestry, though its range of applicability is not limited to such materials.

By first explaining the process of production the nature of the article produced will be also made clear.

The process forms the subject-matter of my application, Serial No. 7,595, filed March 6, 1900, of which this present application is a division.

First the portrait or other picture or design is photographed on silk, preferably by methods not employing a gelatin or albuminous film. After printing it on silk the picture is fixed by means of a thiosulfatebath and thoroughly washed, so as to free the fibers of the silk from all traces of the thiosulfate. I then take a solution of White alum, using, say, one part of alum to sixteen parts of Water, by Weight, and While the silk 0 is still wet I lay it with the back or unprinted surface downward on the surface of the alum solution without letting the alum solution flow-onto or over the printed face of the silk. In ten or fifteen seconds the picture is taken out of the solution, let drip, and then dried. As a result of this the fabric is impregnated with the alum. The evaporation of the water leaves the impregnating-alum in the fabric. The fabric so prepared is ready to receive colors,which are applied by brush as desired, using water-colors. Permanent colors are the best colors to use; but anilin colors give very beautiful effects, especially for pictures of flowers. Alum solution may also be added to the colors before they are applied. The

alum prevents the colors from running or blurring while drying, it renders them more intense and more durable, and it makes them practically Waterproof, though I do not mean to say that they will withstand violent rub- 5o bing or abuse while wet. The picture after being so colored may be additionally protected by coating it with pegamoid or other protecting and transparent material.

In applying the process to heavy fabrics, such as tapestry, the alum-bath may be allowed to completely cover both the printed and unprinted surfaces of the fabric.

I have described the best Way of preparing my improved colored photographs; but I do not wish to imply that the details set forth are not subject to some modification. I wish of course to distinguish widely between this new invention and the well-known use of alu m for hardening gelatin and other films and negatives, which latter is for an entirely different purpose and result.

I claim as the novel and characteristic features of my invention the following:

1. A photograph in colors on textile fabric having alum in the fabric and on the back thereof and colors applied only to the face thereof, substantially as set forth.

2. A photograph in colors on textile fabric having alum in the dry state in the fabric and colors applied on the face of the photograph, substantially as set forth.

3. A photograph on textile fabric, having alum applied to the said fabric and colors applied to the face thereof, substantially as set forth.

Signed this 6th day of June, 1900, at New York, N. Y.

PROSPER MARIE CONSTANT GRENIER.

Witnesses:

HENRY T. MORTON, HAROLD BINNEY. 

